Rotational flow and sink flow-coupling integrated system for ultra-clean desulphuration and dedusting and desulphuration and dedusting method therefor

摘要

Provided are a rotational flow and sink flow-coupling integrated system for ultra-clean desulphuration and dedusting and a desulphuration and dedusting method therefor. The system comprises a spray layer (3), a slurry pool (5) and a circulating pump, and further comprises a rotational flow and sink flow-coupling device (4) and a tube bundle-type dedusting and demisting device (2), wherein the rotational flow and sink flow-coupling device (4) is mounted above the slurry pool (5) and below the spray layer (3), the tube bundle-type dedusting and demisting device (2) is arranged at the top of a tower body (1), and the rotational flow and sink flow-coupling device (4) comprises a plurality of rotational flow and sink flow-coupling units (41) and supporting beams (42) for fixing which are located therebelow, each rotational flow and sink flow-coupling unit (41) comprises a rotational flow cylinder (44), a rotational flow rotor (43) and a fl-couplingow guiding device (45), the rotational flow rotor (43) comprises an inner cylinder body (431) and rotational flow blades (432), and the inner diameter of the flow guiding device (45) at the place where a flue gas outflows is less than the inner diameter at the place where the flue gas inflows; and the tube bundle-type dedusting and demisting device (2) comprises a plurality of dedusting and demisting units, each dedusting and demisting unit comprises a flow guiding cylinder (21) and n turbulent flow rotors (22) provided inside the flow guiding cylinder (21), and all the turbulent flow rotors (22) are disposed up and down perpendicular to the wall of the flow guiding cylinder (21).